I have tested it now and put a new battery in there, it works perfectly, and Ive added a picture to show proof of that. Approximate Size: Adjustable band.
eBay
PXN 9607X Wireless Bluetooth Game Controller for Nintendo Switch Console Gamepad Joysticks for PC Computer Windows XP/7/8/10/11
Aliexpress UK
Very good used condition. Protective detachable plastic cover has marks but screen underneath no marks. No box or manual. Battery icon flashing so will need replacement battery soon.
eBay
I’ve given up diving and will be listing all my old kit, not sure when I’ll get back into it. My first and only ever dive computer been on about 80ish dives with me. Just changed the battery and everything is working. Comes with box and all instructions. UK postage only
eBay
These O-rings are user-replaceable for SubGear. You are buying 4x new O-rings for a Sub Gear XP10, XP-H, HP-3 dive computer. 4x New O-rings. I aim to resolve issues.
eBay
Sie kaufen hier ein Batterie-Kit passend für Tauchcomputer Seemann XP10. You are buying a battery kit suitable for Seemann XP10 dive computer. State acquistando un kit di batterie adatto al computer subacqueo Seemann XP10.
eBay
This battery set is user-replaceable for SubGear. XP-H dive computer. 1 Battery hatch O-ring. 1 New Sony/MuRata or Panasonic3.0Volts Lithium cell, 10 years shelf life. Kit Includes.
eBay
XP-H3 Dive Computer. 1 New 3.0V Lithium cell battery. 10 Years shelf life. 1 Battery Hatch O-ring. Kit Includes.
eBay
Scubapro UWATEC Subgear XP-10 dive computer in 2 gauge console. Large 2" Submersible Pressure Gauge (spg) and XP-10 nitrox compatible computer.
eBay